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EP 3 970 247 A1

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(43) Date of publication: 23.03.2022 Bulletin 2022/12 (21) Application number: 20722951.9 (22) Date of filing: 14.04.2020

(51) International Patent Classification (IPC):  H01S 5/10(2021.01) H01S 5/022(2021.01) H01S 5/40(2006.01) H01S 5/065(2006.01) H04N 9/31(2006.01) H01S 5/34(2006.01) (52) Cooperative Patent Classification (CPC): H01S 5/1025; H01S 5/1032; H01S 5/1039; H01S 5/4093; H01S 5/4012; H01S 5/3414; H01S 5/0652; H04N 9/3129; G02B 27/48; G02B 2027/014; G02B 2027/0178; G02B 27/0093; G02B 6/0016; G02B 6/0036; H01S 5/0225 (86) International application number: PCT/US2020/028023 (87) International publication number: WO 2020/231567 (19.11.2020 Gazette 2020/47)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 15.05.2019 US 201916413505 (71) Applicant: Microsoft Technology Licensing, LLC Redmond, WA 98052-6399 (US)	(72) Inventors: SHAHIN, Shiva Redmond, Washington 98052-6399 (US) ZIMMERMAN, Dale Eugene Redmond, Washington 98052-6399 (US) (74) Representative: Goddar, Heinz J.  Boehmert & Boehmert Anwaltspartnerschaft mbB Pettenkoferstrasse 22 80336 München 80336 München (DE)